<template>
  <section class="main">
    <input id="toggle-all" class="toggle-all" type="checkbox" :checked="isAllChecked" @change="changeFn"/>
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- These are here just to show the structure of the list items -->
      <!-- List items should get the class `editing` when editing and `completed` when marked as completed -->
      <li :class="item.isDone?'completed':''" v-for="(item,index) in arr" :key="item.id">
        <div class="view">
          <input class="toggle" type="checkbox"  v-model="item.isDone"/>
          <label>{{item.name}}</label>
          <button class="destroy" @click="del(index)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props:['arr'],
  methods:{
    //删除 派发事件
    del(index){
      this.$emit('delTodo',index)
    },
    //全选影响小选
    changeFn(e){
      this.arr.forEach(item=>item.isDone=e.target.checked)
    }
  },
  computed:{
    // 小选影响全选
    isAllChecked(){
      return this.arr.every(item=>item.isDone)
    }
  }
};
</script>

<style>
</style>